Valve.



. PATBNTED AUG. 11, 1903.

L. N. DAVIS.

VALVE.l

APPLICATION FILED 00T. 29,` 1902.

N0 MODEL.

Juventa )I- )Saaw l Y ad., n. M flttozeg Patented August 11, 1903.

PATENT OEEICE.

LOUIS N. DAVIS, OF WESTCHESTER, PENNSYLVANIA.

VALVE.

SELECIFICATION forming part of Letters Patent N 0. 735,719, dated August 1 1, 1903. Applicationled October 29. 1902. Serial No. 129.204. (No model.)

T all whom, it may concern:

Be it known that I LOUIS NfDAVIS, a citi- .zen of the United States, residing at Westchester, in the county of. Chester and State of Pennsylvania, have invented certain Improvements in Valves, of which the following is a specification.

This invention relates toigage-valves, and is adapted for effecting a determinate regulation of the amount of water, steam, gas, or other iuid that shall pass therethrough. It is designed to provide meanswhereby a valve may be readily set, so that the dednite' proportion desired of its total capacity may be passed therethrough.

A further object is to provide for the automatic packing and lubrication of the mechanism when employing steam. It is also designed to provide asimple and economical construction of reliable operation.

The nature and characteristicfeatures of the invention will more fully appear by reference to the following description and the accompanying drawings in illustration thereof, of which- Figure 1 represents an elevation of an ordinary valve-casing with my improvements applied thereto. Fig. 2 is a vertical sectional view of the construction illustrated in Fig. 1. Fig. 3 is a sectional View taken on the line 3 3 of Fig. 2. Fig. 4. represents an elevation of the stationary cylinder forming the valveseat with the cap fixed thereto. Fig. 5 represents a plan view of the Vgraduated nut or cap having the valve-stem passing therethrough. Fig. 6 representsan elevation of the construction shown in Fig. 5, and Figs. 7, 8, 9, and 10 represent developed views of successive relations off/the lcockdao its seat and the indicatortothe graduated cap.

As shown in-the drawings, the casing 1, having the branches 2 and 3, is provided with a screw-cap 4, having connected therewith the hollow stem or sleeve 5 and the hollow cylinder 6, the cylinder having the internal grooves 7, the `ports or perforations 8, and the tapered surface 9, fitting in the seat 10 of the casing. A hollow cylinder 11, having the ports or perforations 12 adapted to register with the perforations 8, forms a cock movable in the hollow cylinder 6, providing a seat therefor, and a stem 13, connected with the cock, projects upward through the sleeve 5 and the cap 14. thereon and terminates in the handle 15,v being provided with the pin 16, adapted to be engaged by the graduated notches 17 and the stops 18 of the cap. A

coiled spring 19 is sleeved on the stein 13 within the sleeve 5 and bears against the nut 14 and the cock 11 to hold the latter in place and to hold the pin or indicator 16 in the position to which it may be turned as in its relation to the notch 17 of the graduated scale with which it is engaged.

In setting the valve or moving it from the closed position when the indicator, 16 is in contact with a pin 18 the handle 15 is lifted and turned until the indicating-pin 16 can be dropped into the required notch 17, which indicates the position of the cock for effecting the proportionate opening of the valve desired, the spring holding the parts in the position to which they have been brought. There is then in registration either one, two, three, or four of the ports 8 of the seat and the ports 12 of the cock, permitting the ow of one-fourth, one-half, three-fourths, or all of the total capacity from the branch 2 to the branch 3. For this proportionate arrangement the cock is provided with two tiers of perforations, of which the upper tier has two 'and the lower tier four perforations alined so that upon the revolution of the cock they will register with the four perforations of the seat to successively increase the port area.. It will be understood that the number of holes vin the respective cylinders may be varied to provide the proportion iiow desired.

In the use of steam or other condensing Huid its tendency to work between the seat 6 and the cock 1l results in filling the capillary grooves 7 with the water of condensation, which provides a packing or seal for the joint as well as a bearing and lubricant forthe valve. 1

lHaving described my invention, I claim- 1. In a valve, a casing having branches, an outer cylinder seated therein and having a plurality of ports through which said branches communicate, and an inner cylinder revolublein said outer cylinder and having a plurality of ports adapted to register with the ports of said outer cylinder, the ports of said cylinders being arranged so as IOO to permit various numbers to be brought into registration to vary the ow of uid therethrough, substantially as specified.

2. In a valve, a casing having branches, a cap thereon, a cylinder depending from said cap and seated in said casing, said cylinder having a plurality of ports through which said branches communicate, and a revoluble cylinder telescoping with said first cylinder and having a plurality of ports adapted to register with the ports of said first cylinder, the ports of the said cylinders being arranged so as to permit various numbers to be brought into registration to Vary the How of iuid therethrough, substantially as specified.

3. In a valve, a casing, a cap for said casing, a sleeve projecting upwardly from said cap, acylindrical valve-seat extending downwardly from said cap into said casing, said seat having one or more ports, a cylindrical valve having one or more ports adapted to register with the port or ports of said seat, the respective ports being adapted for the determinate regulation of the flow of fluid therethrough, a stem fixed to said valve and extending through said sleeve, a pin xed to said stem for indicating and holding the position of said valve, a graduated scale on said sleeve having notches for engaging said pin, and a spring on said stem for holding said pin in engagement with` the respective notches, substantially as specified.

In testimony whereof I have hereunto set my hand, this 27th day of October, A. D. 1902, in the presence of the subscribing Witnesses.

LOUIS N. DAVIS.

Witnesses:

JOHN F. MCBRIDE, DAVIS BEAUMONT. 

